#app {
  font-family: PingFang SC, "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

* {
  box-sizing: border-box;
}